AI Dev Tool: PostgreSQL Vector Search Extension

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Preview Code

```python
# AI Dev Tool: Edge Function API Gateway with PostgreSQL Vector Search Extension
# =====================================================================================
# This code asset provides a production-ready Edge Function API Gateway using Cloudflare Workers
# and Hono, integrated with PostgreSQL Vector Search Extension for efficient data retrieval.

import os
import json
from pydantic import BaseModel
from hono import Hono
from cloudflare import Worker
from psycopg2 import connect
from psycopg2.extras import DictCursor

# Define the PostgreSQL connection settings
PG_HOST = os.environ.get('PG_HOST')
PG_DATABASE = os.environ.get('PG_DATABASE')
PG_USER = os.environ.get('PG_USER')
PG_PASSWORD = os.environ.get('PG_PASSWORD')

# Define the PostgreSQL Vector Search Extension connection
conn = connect(
    host=PG_HOST,
    database=PG_DATABASE,
    user=PG_USER,
# ... full runnable version includes tests & documentation